Examples from the Web for photometer
A number of measurements of the illuminating power of an electric lamp were rapidly made during the lecture with this photometer.
The photometer may show a very adequate intensity of illumination; nevertheless seeing may be unsatisfactory or even impossible.
The photometer or instrument for accurate comparison of lights, their amount and intensity, tells a different story.Astronomy|David Todd
The photometer has played an important rôle in establishing the scientific basis of camouflage.
The photometer, preferably one of the Lummer-Brodhun form, is set up on a gallery or bench.